Effect of different types of fines on the properties of recycled chemical pulp

Hyoung Lee; Won-Seok Nam; Sang-Don Sohn; Ki-Hyon Paik

Journal of Industrial and Engineering Chemistry, Vol.17, No.1, 100-104, January, 2011

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Effect of different types of fines on the properties of recycled chemical pulp

Hyoung Lee, Won-Seok Nam¹, Sang-Don Sohn², and Ki-Hyon Paik^{3, †}

Technology and Environment Team, Hansol Paper Ltd., Chunan-Si 330-920, Republic of Korea
¹International Paper Shorewood Korea Ltd., 23 BL-2, #650 Jinsa Industrial Complex, Bangi-ri, Sanam-myun, Sacheon City, Gyeongsangnam-do 664-942, Republic of Korea
²R&D Team Manager, Tullis Russell Coater Ltd., Ansan-SI 425-110, Republic of Korea
³Division of Environmental Science and Ecological Engineering, Korea University, Anam-Dong, Seoungbuk-Gu, Seoul 136-701, Republic of Korea

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The effect of fine content and quality on the recycled chemical pulps was studied. As fine content increased, the apparent sheet density linearly increased. The effect of fines from DIP (deinked pulp) on the apparent density of the sheets was the most prominent especially with the secondary fines. The addition of secondary fines obtained from HW-BKP (hardwood-bleached kraft pulp) and DIP, and primary fines from DIP increased the tensile strength but decreased the light scattering coefficient after a critical point. The improvement of strength by secondary fines was caused by the different quality of fines, relatively larger specific area and higher WRVs (water retention values). While the primary fines of HW-BKP increased the light scattering coefficient but had little effects on the tensile strength. Porosity was rapidly decreased with the addition of secondary fines more than 30% regardless types of pulps.

Keywords:Primary fines;Secondary fines;Recycled pulp;Physical properties;Optical properties

[References]

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Blechschmidt J, Mallon U, Schramm ST, Wochenbl. Papierfabr., 5, 300 (2002)
TAPPI Standard Test Method T 261 0m-94 Fines Fraction of Paper Stock by Wet Screening (1979)
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Nam WS, Park JM, Paik KH, J. Ind. Eng. Chem., 12(4), 601 (2006)
Cho BU, Ryu JY, Song BK, J. Ind. Eng. Chem., 15(2), 196 (2009)
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Lindholm CA, Paperi ja Puu., 12, 803 (1980)
Sohn SD, Paik KH, J. Ind. Eng. Chem., 12(3), 460 (2006)
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[1] Brecht W, Klemm KH, Wochenbl. Papierfabr., 11, 364 (1952)

[2] Blechschmidt J, Mallon U, Schramm ST, Wochenbl. Papierfabr., 5, 300 (2002)

[3] TAPPI Standard Test Method T 261 0m-94 Fines Fraction of Paper Stock by Wet Screening (1979)

[4] Marton R, TAPPI J., 47, 205A (1964)

[5] Sundberg A, Pranovich AV, Holmbom B, J. Pulp Paper Sci., 33, 173 (2003)

[6] Nam WS, Park JM, Paik KH, J. Ind. Eng. Chem., 12(4), 601 (2006)

[7] Cho BU, Ryu JY, Song BK, J. Ind. Eng. Chem., 15(2), 196 (2009)

[8] Mohlin UB, Sven. Papperstidn., 16, 461 (1980)

[9] Mohlin UB, Sven. Papperstidn., 18, 513 (1980)

[10] Lindholm CA, Paperi ja Puu., 12, 803 (1980)

[11] Sohn SD, Paik KH, J. Ind. Eng. Chem., 12(3), 460 (2006)

[12] Moss PA, Retulainen E, J. Pulp Paper Sci., 23, J382 (1997)

[13] Luukko K, Kajolaa PK, Paulapuro H, Appita J., 50, 387 (1997)

[14] Vainio A, Kangas J, Paulapuro H, J. Pulp Paper Sci., 29, 29 (2007)

[15] Rundlo˝ f M, Htun M, Ho˝ glund H, Wagberg L, J. Pulp Paper Sci., 26, 301 (2000)

[16] Luukko K, Paulapuro H, J. Pulp Paper Sci., 25, 273 (1999)

[17] Luukko K, Paulapuro H, TAPPI J., 82, 95 (1999)

[18] Sirvio˝ J , Nurminen I, Pulp Paper., 105, T193 (2004)

[19] Thode EF, Ingmanson WL, TAPPI J., 42, 74 (1959)

[20] Kang T, Paulapuro H, TAPPI J., 5, 25 (2006)

[21] Seth RS, Pulp Paper., 104, T47 (2003)

[22] Hawes JM, Doshi MR, Recycled Paper Technology, TAPPI Press, Atlanta, p.253. (1994)

[23] Bliss T, Proc. Tappi Conf. Nov., p. 217. (1984)

[24] Jayme G, TAPPI J., 41, 180A (1951)

[25] Law KN, Lanouette R, Valade JL, Pulp Paper Can., 100, 117 (1999)

[26] Tschirner U, Cao B, Ramaswamy S, 1998 Recycling Sympos. Proc., p. 149. (1998)

[27] Laivins GV, Scallan AM, J. Pulp Paper Sci., 22, 178 (1996)